Dampening the core one
Hi , I am thinking how to „stack“ the core one?
printer- squashballfeet-concrete tile- foam
ore : printer-supplied rubber feet- tile- squashballfeet
what do you guys think would be best. ?
RE: Dampening the core one
I'm using: printer - stock rubber feet - granite tile (40x40) - foam.
Gyroid can become a bit funny, when the printer is shaking quite a bit, but the print quality is better, than when standing on the rubber feet on the concrete floor.
RE: Dampening the core one
Presumably Prusa has some of these in their farm now - any idea if they have additional damping they use?
RE: Dampening the core one
I'm using: printer - stock rubber feet - granite tile (40x40) - foam.
Gyroid can become a bit funny, when the printer is shaking quite a bit, but the print quality is better, than when standing on the rubber feet on the concrete floor.
Massive steel plate, printed short feet, TPU pads... works really well
RE: Dampening the core one
I have used surplus 60x60cm floor tiles and dampening materials in different thickness from the local dyi store. Four layers of tiles seem to do the trick it now sits on a wall mounted desk and the desk is more or less stable during print, only small movements can be felt transfer to the desk. The floor tiles are about 20kg each, the local floor tiling supply had some left over not in inventory that they where nice enough to cut down in size to match the printer for some fika bread.
/Anders
RE: Dampening the core one
I have mine on a rubber playground tile.
RE: Dampening the core one
Done something similar, placed it on a 40x40 concrete tile + gym mat (the interlocking type, not very thick).
Have you tried to run the input shaper calibration before and after? I've gotten similar values for the X axis (MZV 47Hz) but pretty different values for the Y axis (before: MZV 47Hz, after: ZVD 53Hz). The ZVD here means that the peak isn't as narrow, but without being able to look at the graphs it's hard to judge.
Either way, the prints are much better than when placed directly on the gym mat and I can't see any ringing.
RE:
I am using printer | granite tile | carpet | floor. I am also consider 'taming' the profile I am using, some of the accelerations are too aggressive for my test.
As opposed to the Voron 2.4. the X/Y is at the top and thus creates more vibrations.
RE: Dampening the core one
What is your aim, to lower noise? I've got squash ball feet on my MK4 and the difference in noise is HUGE. I can't recommend it enough. I installed them early on in my 3D printing journey so I didn't have enough experience to reliably assess print quality with and without the squash ball feet, but when assessing now I don't think they're do any harm at all to the print quality.
RE: Dampening the core one
I’ve never been a big fan of the Prusa feet. My mk3s and mini+ both have had the stock feet replaced with these Sorbothane hemispheres. They do phenomenal job. All of my printers sit on a very heavy coffee table in the corner of my office. I’ll be replacing the feet on my Core One as soon as Amazon makes its delivery today.
RE: Dampening the core one
The 1.75 inch 50 durometer version is currently on sale for $19.99 American.
https://www.amazon.com/dp/B07143ZC16?smid=A1EPE8IE7JPHY4&ref_=chk_typ_imgToDp&th=1
RE: Dampening the core one
I used the squash ball feet edited to fill the ball holes solid, sitting on 5mm gyroid TPU pads. The entire printer is on a 35lb porcelain slab, sitting on a dedicated oak cabinet, That cabinet sits on engineered oak hardwood flooring glued to the concrete foundation of my house.
It's not moving.
RE: Dampening the core one
I tried all manner of concrete pavers, feet, etc. and never liked how the machine shook. I finally made a wooden bracket that wedges between the back top of the enclosure and the wall behind it. Now the printer is dead still even on the most violent of prints.
RE: Dampening the core one
Hmm, mine does just some small wobbling even at high speed, no point in modding anything. Though it sits on a very stable stainless steel workbench. Seems like that might be a big factor here, and why people have so different experiences.
RE: Dampening the core one
So I did two things to fix some of this issue:
first, on printables, there is a printed solid foot with a TPU pad at the bottom. That took care of a lot of of my shaking with the printer.
more recently I noticed that there were HULA feet that I could print specifically for the Core One also on printables.
so I made those and it installed them on the C1 and it’s a lot more stable.
I do have the accelerometer for the printer and I re-ran that procedure… but it probably wasn’t necessary.
RE: Dampening the core one
accelerometer? Tell me more.
RE: Dampening the core one
As part of the compensating controls for the printer, Prusa makes an accelerometer that can be plugged into the wireless antenna on the back of the printer.
https://help.prusa3d.com/article/accelerometer-core-one-mk4-s-mk3-9-s_729349
You then perform a phase stepping calibration on the Core One using Settings > Phase Stepping, and the printer learns how to work around the resonance of that specific printer.
It's probably wise to have the printer on a dense table; I use a desk with a 25mm thick steel plate with HULA feet currently. It's cause vibrations to nearly be eliminated.
One of the things I'm noticing is that when upgrading a MK4s to a Core One, lots of people have issues. Sometimes it's the part from Prusa, but many times it's also a combination of how good they were at performing the upgrade procedure. In that set of cases, it's extremely odd that Prusa doesn't send the $20 kit with the printer as it'd almost certainly help with some of the vibration dampening, etc. (The printer will avoid frequencies that cause printing issues due to resonance / vibration when a phase stepping calibration is performed - it's not going to solve messed up parts, but it will make a difference with print quality and some aspects of vibrations... especially with good TPU feet like the HULAs.)
RE:
The printer will avoid frequencies that cause printing issues due to resonance / vibration when a phase stepping calibration is performed - it's not going to solve messed up parts, but it will make a difference with print quality and some aspects of vibrations... especially with good TPU feet like the HULAs.)
Agree, really odd Prusa didn't include the accelerometer with the kits. I made a set of HULA feet as well and it makes a huge difference. My printer table is a 40kg shop table with a 45mm solid maple top on a concrete floor and without the HULA feet the table was shaking.
- Bob Marley
RE: Dampening the core one
The printer will avoid frequencies that cause printing issues due to resonance / vibration when a phase stepping calibration is performed - it's not going to solve messed up parts, but it will make a difference with print quality and some aspects of vibrations... especially with good TPU feet like the HULAs.)
Agree, really odd Prusa didn't include the accelerometer with the kits. I made a set of HULA feet as well and it makes a huge difference. My printer table is a 40kg shop table with a 45mm solid maple top on a concrete floor and without the HULA feet the table was shaking.
I'll trade you my 35mm steel plate for your maple top... 😉
RE: Dampening the core one
A curiosity: I tried stacking floor tiles on top of my Core One's "enclosed MMU" cover. Maybe 20 .. 30 kg, enough to significantly reduce the printer's movement.
This got me "Filament ejected" errors where it believes it has run out of filament. The head uses the modified sensor from the MMU.
I have had more than three errors, so it's not a random event. It never happens when the printer is running regularly, without "ballast".
Superficially I didn't see any difference in print quality. But my designs are shallow, just a few millimeters high. It can be expected that they easily shake with the printer, what may not be the case for e.g. a tall, narrow spire or a heavier print object.